An endemic areas of the biggest and smallest incidence rates for all cancer within Silesia Voivodeship

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Background: The Silesia Cancer Register conductssystematic monitoring of the cancer incidence since60-years XX c. within Silesia voivodeship. The Registerencompasses the area that is inhabited about 4.8 mlninhabitants, according to the Main Bureau of Statistics.Amount of the persons suffering for cancer constantlyincreasing, although unequally by smaller administrativeunits, i.e 36 districts. Therefore necessity lookingfor really endemic area, especially with the biggest andsmallest cancer incidence rates.Materials and methods: using the M. Segi’s and M.Kurihara’s procedure in the R. Doll’s modification theaverage incidence rates (partial, crude and standardizedby the “age-world population structure”) – were calculated.The analysis was based on the 183.396 cases ofpersons (males, females) that were suffered on this areain the years 1999–2009.Results: In the year 1999–2009 in Silesia Voivodeship,94.001 cases of all cancer (i.e 51.3 % from total)were diagnosed among males, and 89.395 cases(i.e 48.7%) among females. Age-adjusted incidence ratesvaried from minimum 227.0 to maximum 327.0/100thousand (average for whole areas – 272.4/100 thousand)among males and females. The distribution ofage-standardized cancer incidence rates (in periods:1999–2009, 1999–2002 and 2006– 2009) for all sitesby both sexes is very unequal. The rates of incidencewere used in the chorological type of analyses (a lookingfor of endemic areas especially with the biggest incidence).There endemic areas were described (vide fig1D and 2D). The most frequent and long-lasting sufferingmales and females in the following counties:będziński, bielski, cieszyński, mikołowski and towns:Bielsko-Biała, Chorzów, Dąbrowa Górnicza, Gliwice,Jaworzno, Jastrzębie-Zdrój, Katowice, Tychy, Żory.Conclusion: This analysis is a based to organize ofdiverse mainly prevention activities, i.e anti-cancer education,screenings, etc.

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